This seems like a silly worry. Disney regularly releases a big-ticket family movie over Thanksgiving and a (usually) more "mature" production over Christmas -- Moana didn't suffer for Rogue One coming out just a month later, nor did Frozen II which was separated from The Rise of Skywalker by a month. Heck, back when Disney was producing substantially more films than it is now Thor: Ragnarok came out at the top of November, Coco over Thanksgiving, and The Last Jedi over Christmas and they were all gigantic hits!
If anything it's worse for Disney if they don't pack the holidays. Remember 2023, when The Marvels, despite getting an extra week of premium playdates due to Dune Part Two moving to the following spring, flatlined and was followed by Wish completely cratering over Thanksgiving? They didn't have a Christmas title that year and they had to settle for trying to get people to check out Wish as it was moved to the smallest auditoriums in many theaters because they had nothing else to offer exhibitors, even more so because all the Spring 2024 titles were moved to 2025 (hence the unsuccessful run of Pixar titles that debuted on streaming having very brief runs the following winter to make up for that).